The enzyme $Trypsinogen$ is a component of:

Chymotrypsinogen is produced by the .......

Given below are two statements:
$Statement-I$: Parotid salivary glands are present below the tongue.
$Statement-II$: Sublingual salivary glands are present in front of each ear.
In the light of above statements, choose the most appropriate answer from the options given below:

Bile is stored and concentrated in

The bile secreted by the liver cells passes into the gall bladder through:

$HCl$ is secreted by which of the following cells of the stomach?